Stacked bar chart on barclick not working.

Hi Guys, I have used Stacked bar chart into my project I want to get clicked bar position.
`@Override
    public boolean onTouchEvent(MotionEvent event) {
        if (event.getAction() == MotionEvent.ACTION_DOWN) {
            performClick();
            return true;
        } else {
            return false;
        }
    }`
from this ovveride method not getting the expected result.